CN1954515A - Data communication device and data communication method - Google Patents
Data communication device and data communication method Download PDFInfo
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- CN1954515A CN1954515A CNA2004800431115A CN200480043111A CN1954515A CN 1954515 A CN1954515 A CN 1954515A CN A2004800431115 A CNA2004800431115 A CN A2004800431115A CN 200480043111 A CN200480043111 A CN 200480043111A CN 1954515 A CN1954515 A CN 1954515A
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Abstract
A response signal, which has a different frequency than an electric power supply signal and a data signal, is produced, and the data signal is received from a noncontact IC card (2) at a timing at which to transmit the response signal. In this way, the data signal received from the noncontact IC card (2) can be precisely demodulated without being affected by a modulated signal transmitted from a different data communication apparatus.
Description
Technical field
The present invention relates to have data communication equipment and data communications method to the function of non-contact type Wireless Telecom Equipment (for example contactless IC card, RF label, electronic tag, nothing are keyed in mouth) power supply.
Background technology
Data communication equipment in the past is made of ASK modulator, amplifier and antenna.Wherein, the ASK modulator to the RF signal, be that wireless frequency signal is carried out the ASK modulation, and export this modulation signal; Amplifier amplifies the modulation signal from this ASK modulator output; Antenna will send to the non-contact type Wireless Telecom Equipment through the modulation signal that this amplifier amplifies.
For the non-contact type Wireless Telecom Equipment, if be provided with data communications equipment (distance to data communication equipment is about tens centimetres) in its vicinity, then by receiving the modulation signal that sends out from data communication equipment, this modulation signal is carried out rectification with the acquisition driving power, and in built-in capacitor, put aside this power.
After, can use the power of savings in capacitor, receiving from data communication equipment as the moment of replying, implementing modulating data and send it to (for example, the seeing also non-patent literature 1) such as processing of data communication equipment with the CW (unmodulated continuous wave) of signal.
Thus, become data communication equipment when receiving from modulation signal that the non-contact type Wireless Telecom Equipment sends, to send to the non-contact type Wireless Telecom Equipment as the CW that replys with signal, but, about several kilometers position, position of distance oneself is provided with under the situation of other data communication equipments, in the moment that receives modulation signal from the non-contact type Wireless Telecom Equipment, receive modulation signal sometimes from other data communication equipments.
Like this, in the moment that receives modulation signal from the non-contact type Wireless Telecom Equipment, if receive modulation signal from other data communication equipments, then this modulation signal becomes interference wave, thus sometimes correctly demodulation from the modulation signal of non-contact type Wireless Telecom Equipment transmission.
Be provided with under the situation of a plurality of data communication equipments, if mutual distance is short, then divide and be equipped with different frequencies for fear of the phase mutual interference, but because assignable frequency number is limited, therefore, even if mutual distance is approximately several kilometers, also having nothing for it but sometimes, they distribute identical frequency.
It should be noted that, can avoid the mutual distance of phase mutual interference to be approximately tens kilometers.
Research institute of central authorities of male work Hitachi Co., Ltd of non-patent literature 1:MWE 2003 Microwave Workshop Digest " microminiature RFID チ ッ プ: ミ ュ one チ ッ プ " space assistant Micron Technology, distribution in 2003, the 235th page～the 238th page
Because data communication equipment in the past as above constitutes, therefore, sometimes exist in from moment that the non-contact type Wireless Telecom Equipment receives modulation signal when other data communication equipments receive modulation signal, this modulation signal becomes interference wave, thus the correct problem of the modulation signal that sends from the non-contact type Wireless Telecom Equipment of demodulation.
The present invention makes in order to address the above problem, therefore, its purpose is, realizes a kind of data communication equipment and data communications method, the modulation signal that not sent from the non-contact type Wireless Telecom Equipment by the correct demodulation in influence ground of the modulating wave that sends from other data communication equipments.
Summary of the invention
Foundation data communication equipment being provided with of the present invention replied and used the signal generation unit, be used to generate the replying of data-signal different frequency that is generated with the data-signal generation unit and use signal, reply when use signal sending, to receive from the data-signal of non-contact type Wireless Telecom Equipment transmission from transmitting element.
The effect that can have thus, the data-signal that the correct demodulation in influence ground that is not subjected to the modulating wave that sends from other communicators sends from the non-contact type Wireless Telecom Equipment.
Description of drawings
Fig. 1 is a structure chart, and its expression is according to the data communication equipment of embodiment of the present invention 1.
Fig. 2 is a flow chart, and its expression is according to the data communications method of embodiment of the present invention 1.
Fig. 3 is a key diagram, and its expression is according to sub-district (cell) configuration of embodiment of the present invention 1.
Fig. 4 is a key diagram, the relation of its expression frequency and power.
Fig. 5 is a key diagram, and its expression sends the peak power of signal.
Fig. 6 is the key diagram of the input and output of expression electric wave.
Fig. 7 is a structure chart, and its expression is according to the data communication equipment of embodiment of the present invention 2.
Fig. 8 is the key diagram that the expression data demodulates is handled.
Fig. 9 is the key diagram that the expression data demodulates is handled.
Figure 10 is the key diagram that the expression data demodulates is handled.
Figure 11 is the key diagram that the expression data demodulates is handled.
Figure 12 is the key diagram that the expression data demodulates is handled.
Embodiment
Below, in order to illustrate in greater detail the present invention, will be used to implement best mode of the present invention according to accompanying drawing explanation.
Execution mode 1
Fig. 1 is the structure chart of expression according to the data communication equipment of embodiment of the present invention 1.
No modulated continuous wave), data-signal (modulating wave) or reply in the drawings, will power with signal (CW: corresponding to the data communication equipment 1 of for example read-write equipment etc. with signal (CW: no modulated continuous wave) send to contactless IC card 2.
The contactless IC card 2 as the non-contact type Wireless Telecom Equipment receive the power supply that sends from data communication equipment 1 with signal after, utilize this power supply built-in capacitor to be charged with signal, afterwards, the electric charge of savings in this capacitor as power supply, for example carried out the processing such as data-signal that demodulation sends from data communication equipment 1.
Data transmitter 11 output of data communication equipment 1 send to contactless IC card 2 transmissions data such as instruction, power with typed data or reply and use typed data.
RF signal oscillator 12 is to instruct to wait to send under the data conditions in the data from data transmitter 11 outputs, is that power supply is used under the situation of typed data in the data from data transmitter 11 outputs perhaps, and making frequency is f
1The vibration of no modulation signal.In the data from data transmitter 11 outputs is to reply with under the situation of typed data, and making frequency is f
4The vibration of no modulation signal.
Diverter switch 13 will be f through the frequency of RF signal oscillator 12 vibrations after sending data from data transmitter 11 outputs
1No modulation signal export to pulse modulator 14, from data transmitter 11 output power supply with typed data or after replying with typed data, will be f through the frequency of RF signal oscillator 12 vibrations
1No modulation signal or frequency be f
4No modulation signal output to level adjuster 15.
Pulse modulator 14 is f according to the transmission data of data transmitter 11 outputs to the frequency through 12 vibrations of RF signal oscillator
1No modulation signal carry out pulse modulation (for example ASK modulation), export this modulation signal afterwards.
15 pairs of frequencies through 2 vibrations of RF signal oscillator of level modulation are f
1Or frequency is f
4The peak power of no modulation signal adjust, the peak power that makes this no modulation signal is greater than the peak power from the modulation signal of pulse modulator 14 outputs.
Diverter switch 16 is after sending data from data transmitter 11 outputs, to export to amplifier 17 from the modulation signal of pulse modulator 14 outputs, exporting power supply from data transmitter 11 with typed data or after replying the typed data of usefulness, will output to amplifier 17 from the no modulation signal of level adjuster 15 outputs.
17 pairs in amplifier is from the modulation signal of diverter switch 16 outputs or do not have modulation signal and carry out and amplify.
By data transmitter 11, RF signal oscillator 12, diverter switch 13,16, pulse modulator 14 and amplifier 17 composition data signal generation units.
Constitute power supply with the signal generation unit with reply and use the signal generation unit by data transmitter 11, RF signal oscillator 12, diverter switch 13,16, level adjuster 15 and amplifier 17.
Circulator 18 will or not have modulation signal and export to antenna 19 from the modulation signal of amplifier 17 output, on the other hand, will output to demodulator circuit 20 by the modulation signal that antenna 19 receives.
The modulation signal that antenna 19 will be amplified by amplifier 17 or do not have modulation signal and send to contactless IC card 2 on the other hand, receives the modulation signal that sends from contactless IC card 2.Circulator 18 and antenna 19 have constituted transmitting element and receiving element.Demodulator circuit 20 comes demodulating data according to the modulation signal that is received by antenna 19.
The antenna 21 of contactless IC card 2 receives from the modulation signal of data communication equipment 1 transmission or does not have modulation signal.If the received signal of antenna 21 is that frequency is f
1No modulation signal, then these no modulation signals of 22 pairs of charging circuits are carried out rectifications and are used power to obtain to drive, and should drive with power and be accumulated in the capacitor 23.
Modulation-demodulation circuit 24 utilizes the power in the capacitor 23 that is accumulated in charging circuit 22 to carry out driving, if the received signal of antenna 21 is that frequency is f
1Modulation signal, then data such as instruction are carried out demodulation according to this modulation signal, implement and the corresponding processing of these data.If the received signal of antenna 21 is frequencies is f
4No modulation signal, then modulating with contactless IC card 2 is the data of destination, and this modulation signal is exported to antenna 21.
Fig. 2 is a flow chart, and its expression is according to the data communications method of embodiment of the present invention 1.
Below, put up with its operation and describe.
Contactless IC card 2 is not installed power supplys such as battery, unless accept externally fed, otherwise can not start.
Therefore, before data such as data communication equipment 1 transmission instruction, power to contactless IC card 2 with contactless state.
At first, the data transmitter 11 of data communication equipment 1 is before transmission data such as output order, and will power outputs to RF signal oscillator 12, switch unit 13,16 and pulse modulator 14 (step ST1) with typed data.
Here, because power supply for example is not significant data such as control command with typed data, and not to be purpose, therefore with the information transmission, data content can be arbitrarily, but preferably can clearly distinguish transmission data such as instruction, replys the data with typed data etc.
The RF signal oscillator 12 of data communication equipment 1 after receiving data from data transmitter 11, confirm these data be the power supply with transmission data such as typed data, instructions, still reply usefulness typed data (step ST2, ST7).
RF signal oscillator 12 assert from the data of data transmitter 11 outputs be power supply with typed data after, make that to allocate in advance with the frequency be f
1No modulation signal vibration (step ST3).
Although be with to this data communication equipment 1 dividing frequency f
1Situation be illustrated, but the hypothesis as shown in Figure 3 and Figure 4, distributed frequency f to nigh other data communication equipments are set
1, f
2, f
3In any one.
The diverter switch 13 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter 11.
Diverter switch 13 will be f through the frequency of RF signal oscillator 12 vibrations after the data that affirmation is exported from data transmitter 11 are to power with typed data
1No modulation signal output to level adjuster 15.
The level adjuster 15 of data communication equipment 1 is f in the frequency that receives through 12 vibrations of RF signal oscillator
1No modulation signal after, the peak power of this no modulation signal carried out adjusts, make the peak power (step ST4) of the peak power of this no modulation signal greater than the modulation signal of exporting from pulse modulator 14.
That is, adjust peak power, so that power supply uses the peak power of no modulation signal greater than the peak power (referring to Fig. 5) of data transmission with modulation signal through the no modulation signal of RF signal oscillator 12 vibrations.
The diverter switch 16 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter 11.
Diverter switch 16 will be exported to amplifier 17 from the no modulation signal of level adjuster 15 outputs after the data that affirmation is exported from data transmitter 11 are to power with typed data.
The amplifier 17 of data communication equipment 1 is f receive frequency from diverter switch 16
1No modulation signal after, this no modulation signal carried out amplifies (step ST5).
The circulator 18 of data communication equipment 1 should output to antenna 19 by no modulation signal receiving behind the no modulation signal that amplifier 17 amplifies.
Behind the no modulation signal of the antenna 19 of data communication equipment 1 after receiving amplification, should use signal to aerial emission as power supply by no modulation signal, thus, should send to contactless IC card 2 (step ST6) by no modulation signal from circulator 18.
It is f that the antenna 21 of contactless IC card 2 receives the frequency that sends from data communication equipment 1
1No modulation signal.
If the received signal of antenna 21 is frequencies is f
1No modulation signal, then 22 pairs of the charging circuits of contactless IC card 2 should be carried out rectifications by no modulation signals, used power to obtain driving, and should drive with power and be accumulated in the capacitor 23.
The data transmitter 11 of data communication equipment 1 is f sent frequency from antenna 19 as mentioned above
1No modulation signal after, the transmission data such as will instruct to export to RF signal oscillator 12, diverter switch 13,16 and pulse modulator 14 (step ST1).
The RF signal oscillator 12 of data communication equipment 1 after receiving data from data transmitter 11, confirm these data be the power supply with transmission data such as typed data, instructions, still reply usefulness typed data (step ST2, ST7).
RF signal oscillator 12 is confirming from the data of data transmitter 11 outputs it is after instruction waits the transmission data, to make and allocate in advance with frequency f
1No modulation signal vibration (step ST8).
The diverter switch 13 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter 11.
Diverter switch 13 will be f through the frequency of RF signal oscillator 12 vibrations after the data that affirmation is exported from data transmitter 11 are to send data
1No modulation signal output to pulse modulator 14.
The pulse modulator 14 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter 11.
Pulse modulator 14 waits according to this instruction to send data confirming from the data of data transmitter 11 outputs it is after instruction waits the transmission data, is f to the frequency through 12 vibrations of RF signal oscillator
1No modulation signal carry out pulse modulation (for example ASK modulation), and this modulation signal is exported to diverter switch 16 (step ST9).
The diverter switch 16 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter 11.
Diverter switch 16 will be exported to amplifier 17 from the modulation signal of pulse modulator 14 outputs confirming from the data of data transmitter 11 outputs it is after instruction waits the transmission data.
The amplifier 17 of data communication equipment 1 is f receive frequency from diverter switch 16
1Modulation signal after, this modulation signal is amplified (step ST5).
The circulator 18 of data communication equipment 1 outputs to antenna 19 with this modulation signal behind the modulation signal that receives after amplifier 17 amplifies.
Behind the modulation signal of the antenna 19 of data communication equipment 1 after receiving amplification from circulator 18, with this modulation signal as data-signal to aerial emission, thus, this modulation signal is sent to contactless IC card 2 (step ST6).
It is f that the antenna 21 of contactless IC card 2 receives the frequency that sends from data communication equipment 1
1Modulation signal.
If the received signal of antenna 21 is frequencies is f
1Modulation signal, then the power that are accumulated in the capacitor 23 of charging circuit 22 of the modulation-demodulation circuit 24 of contactless IC card 2 utilization are carried out driving, and according to this modulation signal data such as instruction are carried out demodulation, implement and the corresponding processing of these data.
Next, the data transmitter 11 of data communication equipment 1 will be replied with typed data and export to RF signal oscillator 12, diverter switch 13,16 and pulse modulator 14 (step ST1) when contactless IC card 2 is received data-signal.
Here, for example not significant data such as control command and be not to be transmitted as purpose owing to reply with information with typed data, therefore, data content can be arbitrarily, sends data, the power supply data with typed data etc. but preferably can clearly distinguish order etc.
The RF signal oscillator 12 of data communication equipment 1 after receiving data from data transmitter 11, confirm these data be the power supply with transmission data such as typed data, instructions, still reply usefulness typed data (step ST2, ST7).
RF signal oscillator 12 makes and allocates in advance with frequency f after the data that affirmation is exported from data transmitter 11 are to reply with typed data
4No modulation signal vibration (step ST10).
Although be that this data communication equipment 1 of subtend has distributed frequency f
4Situation be illustrated, but also can suppose to nigh other data communication equipments 1 dividing frequency f is set
4, f
5, f
6In any one.
The diverter switch 13 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter 11.
Diverter switch 13 will be f through the frequency of RF signal oscillator 12 vibrations after the data that affirmation is exported from data transmitter 11 are to reply with typed data
4No modulation signal export to level adjuster 15.
The level adjuster 15 of data communication equipment 1 is f in the frequency that receives through 12 vibrations of RF signal oscillator
4No modulation signal after, adjust the peak power of this no modulation signal, the peak power that makes this no modulation signal is greater than the peak power (step ST11) from the modulation signal of pulse modulator 14 outputs.
That is, adjust peak power, so that the peak power of replying with no modulation signal sends the peak power of using modulation signal greater than data through the no modulation signal of RF signal oscillator 12 vibrations.
The diverter switch 16 of data communication equipment 1 confirms that these data are that power supply is with transmission data such as typed data, instructions, still reply and use typed data after receiving data from data transmitter.
Diverter switch 16 will be exported to amplifier 17 from the no modulation signal of level adjuster 15 outputs after the data that affirmation is exported from data transmitter 11 are to reply with typed data.
The amplifier 17 of data communication equipment 1 is f receive frequency from diverter switch 16
4No modulation signal after, this no modulation signal is amplified (step ST12).
The circulator 18 of data communication equipment 1 should be exported to antenna 19 by no modulation signal receiving behind the no modulation signal that amplifier 17 amplifies.
Behind the no modulation signal of the antenna 19 of data communication equipment 1 after receiving amplification, should use signal to aerial emission as replying by no modulation signal, thus, should send to contactless IC card 2 (step ST13) by no modulation signal from circulator 18.
It is f that the antenna 21 of contactless IC card 2 receives the frequency that sends from data communication equipment 1
4No modulation signal.
If the received signal of antenna 21 is frequencies is f
4No modulation signal, then the power that are accumulated in the capacitor 23 of charging circuit 22 of the modulation-demodulation circuit 24 of contactless IC card 2 utilization are carried out driving, modulation is the data of destination with contactless IC card 2, and is f with frequency
4Modulation signal output to antenna 21.
Thus, frequency is f
4Modulation signal send to data communication equipment 1 as data-signal from contactless IC card 2.
The antenna 19 of data communication equipment 1 receives the frequency f as the data-signal that sends from contactless IC card 2
4Modulation signal (step ST14).
That is as shown in Figure 6, be f, in the frequency that sends as replying with signal
4Moment of no modulation signal, the frequency that receives as data-signal is f
4Modulation signal.
The antenna 19 of data communication equipment 1 is f in the frequency that receives as data-signal
4Modulation signal the time, though be f as the frequency of replying with signal
4No modulation signal be overlaid on this modulation signal, still, even other data communication equipments 1 are f in the frequency that this has sent constantly as data-signal
1Modulation signal, be f as power supply with the frequency of signal
1No modulation signal etc. because itself and the frequency f that sends from contactless IC card 2 as the modulation signal of data-signal
4Therefore difference can not become interference wave.
The demodulator circuit 20 of data communication equipment 1 comes demodulating data (step ST15) according to the modulation signal that is received by antenna 19.
As described above described, according to present embodiment 1, owing to constitute to generate and use signal with replying of signal and data-signal different frequency with power supply, this replys the moment with signal in transmission, therefore the data-signal that reception sends from contactless IC card 2 can play the effect of the modulation signal that the correct demodulation in influence ground that is not subjected to the modulation signal that sends from other data sets sends from contactless IC card 2.
Execution mode 2
Fig. 7 is the structure chart according to the data communication equipment of embodiment of the present invention 2.In the drawings, because therefore the symbolic representation with it identical or corresponding part identical with Fig. 1 omit its explanation.
It is f that RF signal oscillator 31 makes frequency
1The vibration of no modulation signal, it is f that RF signal oscillator 32 makes frequency
4The vibration of no modulation signal.
RF signal oscillator 31,32 has constituted the data-signal generation unit.
Although in above-mentioned execution mode 1, show at data communication equipment 1 and will power when sending to contactless IC card 2 with signal, be not f to frequency
1No modulation signal carry out modulation ground and carry out situation about sending, but can be f also with 14 pairs of frequencies of pulse modulator
1No modulation signal carry out modulation, be f with frequency
1Modulation signal as the power supply send to contactless IC card 2 with signal.
In this case, if the data of exporting from data transmitter 11 are that power supply sends data with typed data or instruction etc., then pulse modulator 14 is f according to these data to the frequency through 31 vibrations of RF signal oscillator
1No modulation signal carry out pulse modulation (for example ASK modulation), and this modulation signal is exported to diverter switch 16.
In this execution mode 2, do not need the diverter switch 13 among Fig. 1.
In above-mentioned execution mode 1, will reply when sending to contactless IC card 2 although show with signal at data communication equipment 1, be not f to frequency
4No modulation signal carry out the situation that modulation ground sends, but can be f also with frequency
4Modulation signal send to contactless IC card 2 as replying with signal.
Execution mode 3
In above-mentioned execution mode 1, show the situation that the demodulator circuit 20 of data communication equipment 1 comes demodulating data according to the modulation signal that is received by antenna 19, but specifically, be following demodulating data.
Because the antenna 19 of data communication equipment 1 is f in the frequency that sends as replying with signal
4Moment of no modulation signal, the frequency as data-signal that receives from contactless IC card 2 is f
4Modulation signal, therefore, in the received signal of antenna 19, (frequency is f to have comprised data-signal
4Modulation signal) and reply that (frequency is f with signal
4No modulation signal).
Therefore, the demodulator circuit 20 of data communication equipment 1 detects and comprises data-signal (frequency is f
4Modulation signal) and reply that (frequency is f with signal
4No modulation signal), the rising edge and the trailing edge of the received signal of antenna 19.
Afterwards, as shown in Figure 8, demodulator circuit 20 when detecting the rising edge of received signal, regard as data from " L " migration for " H ", if detect the trailing edge of received signal, assert that then data move to " L " from " H ", thus demodulating data.
But (frequency is f with signal when the existence transmission is replied
4No modulation signal) the situation of other data communication equipments 1 under, it is replied with signal and is also contained in the received signal of antenna 19.
At this moment, as shown in Figure 9, if from replying of sending of other data communication equipments 1 with signal receiving by the interrupting of the data-signal of contactless IC card 2 transmissions midway, then can in the received signal of antenna 19, form unnecessary trailing edge.
The demodulator circuit 20 of data communication equipment 1 is being separated timing to data, makes a mistake because of detecting this unnecessary trailing edge.
Equally, as shown in figure 10,, then can in the received signal of antenna 19, form unnecessary rising edge if use signal midway having produced of data-signal that receives from contactless IC card 2 transmissions from other data communication equipments 1 replying of transmission.
The demodulator circuit 20 of data communication equipment 1 makes a mistake because of detecting this unnecessary rising edge when demodulating data.
Therefore, in present embodiment 3, in order to prevent by the data demodulates mistake that causes with signal of replying that sends from other communicators 1, as Figure 11 and shown in Figure 12, the rising edge of replying with signal that data communication equipment (not only comprise data communication equipment 1 self but also comprise all data communication equipments of other data communication equipments) is sent is set at level and smooth waveform, simultaneously, the trailing edge of replying with signal is set at level and smooth waveform.
That is, the level adjuster 15 of data communication equipment 1 is being f to frequency
4The level of no modulating wave when modulating, rise thereon along part, the level that raises lentamente, and reduce level lentamente in the trailing edge part thus, makes that the waveform of replying with the rising edge of signal and trailing edge is level and smooth.
In this case, even if owing to receiving being produced or be interrupted of data-signal midway by replying with signal of sending of other data communication equipments 1, the received signal of antenna 19 also just changes smoothly and does not form sharp edge, so demodulating data correctly.
As above explanation is such, according to present embodiment 3, owing to constitute smooth replying signals such as rising edge waveform and trailing edge waveform, therefore, realized following effect: even if produced or be interrupted in receiving the data-signal way by replying with signal of other data communication equipments 1 transmissions, also demodulation correctly is from the data of contactless IC card 2.
Execution mode 4
In above-mentioned execution mode 1-3, showing 1 pair of frequency of data communication equipment is f
1No modulation signal carry out modulation, be f with frequency
1Modulation signal send to contactless IC card 2 as data-signal, and be f with frequency
1No modulation signal send to the situation of contactless IC card 2 as power supply with signal, but in this case, because elongated to the chargeable distance of contactless IC card 2, improving frequencies at level adjuster 15 is f
1The level of no modulation signal the time, even if there is to a certain degree distance, this no modulation signal also can arrive other data communication equipments 1, thereby the interference of signal takes place sometimes.
Therefore, in this execution mode 4, be set at with the frequency f of distributing to data-signal
1, f
2, f
3Different frequency f
5Distribute to the power supply signal.
Particularly, the RF signal oscillator 12 of Fig. 1 is used under the situation of typed data for power supply in the data from data transmitter 11 outputs, and making frequency is f
5The vibration of no modulation signal, diverter switch 13 is f with frequency
5No modulation signal output to level adjuster 15.
Therefore, even if be f with the frequency of signal as power supply
5No modulation signal arrive other data communication equipments 1, can not be f to frequency also as data-signal
1The communication of modulation signal impact.Thus, realized to extend to the effect of the chargeable distance of contactless IC card 2.
Utilizability on the industry
As mentioned above, be applicable to not have according to data communication device of the present invention and data communication method Power supplys such as battery is installed, only otherwise the non-contact type channel radio that just can not start from the outside power supply are arranged Letter equipment etc.
Claims (7)
1. data communication equipment comprises:
The data-signal generation unit is used for generating data-signal when the non-contact type Wireless Telecom Equipment sends data;
Reply and use the signal generation unit, be used for the time, generate with the replying of data-signal different frequency that generates by above-mentioned data-signal generation unit and use signal from above-mentioned non-contact type Wireless Telecom Equipment received signal;
Transmitting element is used to send by the data-signal of above-mentioned data-signal generation unit generation or by above-mentioned replying with replying of signal generation unit generation and uses signal; And
Receiving element is used for sending at above-mentioned transmitting element and replys when use signal, receives from the data-signal of above-mentioned non-contact type Wireless Telecom Equipment transmission.
2. data communication equipment as claimed in claim 1 is characterized in that, reply with the signal generation unit generate to reply with signal be unmodulated continuous wave.
3. data communication equipment as claimed in claim 2 is characterized in that, replys with the signal generation unit and generates level and smooth the replying of rising edge waveform signal.
4. data communication equipment as claimed in claim 2 is characterized in that, replys with the signal generation unit and generates level and smooth the replying of trailing edge waveform signal.
5. data communication equipment as claimed in claim 1 is characterized in that:
Be provided with power supply and use the signal generation unit, be used for when the non-contact type Wireless Telecom Equipment is powered, generating the power supply signal,
Transmitting element sends the power supply signal that is generated with the signal generation unit by power supply.
6. data communication equipment as claimed in claim 5 is characterized in that, powers with the power supply signal of signal generation unit generation with the data-signal different frequency that is generated by the data-signal generation unit.
7. data communications method comprises:
Data-signal generates step, is generating data-signal when the non-contact type Wireless Telecom Equipment sends data;
Reply with signal and generate step, from above-mentioned non-contact type Wireless Telecom Equipment received signal the time, generate and generate the replying of data-signal different frequency that generates in the step at above-mentioned data-signal and use signal;
Forwarding step is sent in above-mentioned data-signal and generates the data-signal that generates in the step or generate replying of generating in the step with signal and use signal above-mentioned replying; And
Receiving step is replied when use signal sending by above-mentioned forwarding step, receives from the data-signal of above-mentioned non-contact type Wireless Telecom Equipment transmission.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/011614 WO2006016411A1 (en) | 2004-08-12 | 2004-08-12 | Data communication apparatus and data communication method |
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| Publication Number | Publication Date |
|---|---|
| CN1954515A true CN1954515A (en) | 2007-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800431115A Pending CN1954515A (en) | 2004-08-12 | 2004-08-12 | Data communication device and data communication method |
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| Country | Link |
|---|---|
| EP (1) | EP1777836A1 (en) |
| JP (1) | JPWO2006016411A1 (en) |
| CN (1) | CN1954515A (en) |
| WO (1) | WO2006016411A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782958A (en) * | 2009-01-15 | 2010-07-21 | 汉王科技股份有限公司 | Digital display IC card system and operating method thereof |
| CN105226764A (en) * | 2011-03-16 | 2016-01-06 | 日立麦克赛尔株式会社 | Current-collecting device and power transmitting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0683551B2 (en) * | 1989-06-02 | 1994-10-19 | 山武ハネウエル株式会社 | Wireless receiver |
-
2004
- 2004-08-12 JP JP2006531094A patent/JPWO2006016411A1/en not_active Withdrawn
- 2004-08-12 WO PCT/JP2004/011614 patent/WO2006016411A1/en not_active Application Discontinuation
- 2004-08-12 EP EP04771589A patent/EP1777836A1/en not_active Withdrawn
- 2004-08-12 CN CNA2004800431115A patent/CN1954515A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782958A (en) * | 2009-01-15 | 2010-07-21 | 汉王科技股份有限公司 | Digital display IC card system and operating method thereof |
| CN105226764A (en) * | 2011-03-16 | 2016-01-06 | 日立麦克赛尔株式会社 | Current-collecting device and power transmitting device |
| CN105226764B (en) * | 2011-03-16 | 2018-04-13 | 麦克赛尔株式会社 | Current-collecting device and power transmitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006016411A1 (en) | 2008-05-01 |
| WO2006016411A1 (en) | 2006-02-16 |
| EP1777836A1 (en) | 2007-04-25 |
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